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Finding the Fourth Proportional to 76,088.79, 104,969.52 and 45,856.95

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Solution

The fourth proportional to 76,088.79, 104,969.52 and 45,856.95 is: 63,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,088.79 : 104,969.52 = 45,856.95 : x
  2. Step 2: Convert to fraction form
    76,088.79/104,969.52 = 45,856.95/x
  3. Step 3: Cross multiply
    76,088.79x = 104,969.52 × 45,856.95
  4. Step 4: Simplify right side
    76,088.79x = 4,813,582,030.16
  5. Step 5: Solve for x
    x = 4,813,582,030.16/76,088.79
  6. Step 6: Final answer
    x = 63,262.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.